PROFESSIONAL CYLINDER HEAD OVERHAUL INCL. UNLEADED
From a mileage of 50.000km we recommend the overhaul of the cylinder heads on all BMW R45, R65, R80 and R100 models.
For this purpose, the cylinder heads are completely disassembled by us upon delivery, carefully cleaned and checked. The disassembled heads are then wet-blasted with fine glass beads. The old valve guides are pressed out, the core holes are re-drilled and new oversize valve guides are pressed back in.
The old valve seat rings are carefully removed, the core bores are re-milled, and new reinforced lead-free valve seat rings are installed. The seat rings are then completely re-milled and ground to fit the new valves exactly. The leak tightness of each valve is then checked with a vacuum tester.
The cylinder head contact surface is then precisely ground flat. Depending on the condition of the cylinder heads, the sealing surface for the valve covers may have to be reworked. With this variant, surface grinding is included. If this is not desired, this can be selected below.
The cylinder head seating surface is then precisely surface ground. Depending on the condition of the cylinder heads, it may be necessary to machine the sealing surface for the valve covers. In this selection the surface grind this sealing surface to achieve absolute tightness to the valve covers is included.
Finally, the cylinder heads are completed with new valves, new valve springs and new valve wedges ready for installation.
To summarize, here is a list of all the work we perform:
- Cylinder heads disassembled, cleaned and checked
- Cylinder heads wet blasting with fine glass beads
- Remove valve guides and exhaust seat rings
- Make new core holes for valve seats and valve guides
- Replace and renew valve guides
- Replace and renew valve seat inserts
- Ream valve guide to final size
- Re-mill valve seats
- Leak test of valves/valve seats
- Grind cylinder head contact surface flat
- Assemble valves, spring retainers and valve springs
- Cylinder heads are shipped absolutely ready for installation
Of course, all parts necessary for the overhaul are included in the price:
- valve seats
- valve guides
- exhaust valves
- intake valves
- valve wedges
- valve springs
Please Note: The indicated price is for one cylinder head!
Processing time currently around 2 weeks.
Service is offered by:
WalzWerk GmbH
Altriper Straße 7, 68766 Hockenheim, DE
info@walzwerk-motorcycles.com
www.walzwerk-motorcycles.de
